diff --git a/CMakeLists.txt b/CMakeLists.txt
index 73c0f9ce..4cf4161f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -37,7 +37,6 @@ endif()
 
 find_package(PNG 1.2 REQUIRED)
 find_package(BISON REQUIRED)
-find_package(FLEX)
 
 include_directories("${PROJECT_SOURCE_DIR}/include")